Gas burner



June 23, 1 936. H. R. PALMER 2,044,953

GAS BURNER File d March 15, 1954' Patented June UNITED STATES PATENTOFFICE GAS BURNER Herbert H, Palmer, Cleveland, Ohio Application .March15, 1934, Serial No. "115,732

6 Claims. (Cl. 158-417) tour of the outer wall 5. The unobstructed on-My invention relates generally to gas burners and more particularly togas burners of the double burner cons tube in which the truction,including i a mixing gas is mixed with a certain amount of primary airbefore issuing from the flame openings or ports.

The principal object of the invention is to provide means for checkingthe flow of air and gas mixture at a point adjacent to but slightlybelow the flame openings.

Other objects and advantages will become apparent from the followingdescription taken in connection with the accompanying drawing whichillustrates a preferred embodiment of the invention, and in which:

Figure 1 is a plan view of my improved burner;

Figure 2 is a longitudinal sectional view taken on the line 2--2 ofFigure 1;

Figure 3 is a plan view of the burner partly in section, the sectionFigure 2.

being taken on line 3-3 of Referring more particularly to the drawing Bdenotes the burner as a whole, comprising the gas and air mixing tube I,adapted to be supplied with gas thro opening 2, from ugh the customarygas cook a manifold, not shown. Primary air is drawn into the mixingtube through side air openings 2 by the inflowing gas. A collar 3 ispreferably provided for regulating the inflow of air.

The inner end of the tube I terminates in an enlarged bowl-shaped burnerhead 4, having an upstanding outer ner flange or wall 6 flange or wall 5and an inconcentrically disposed with respect to and spaced from theouter wall 5.

While the outer wall is fluted to increase The annular space between themay be round.

walls 5 and 6 constitutes a l for the inner and outer 5 of the burner asshown, the flame area, this wall distributing chamber flame outlets orports 8 and 9 respectively. Secondary air for the port 6 is drawn inthrough a centrally disposed passage lli extending vertically throughthe burner head 4, and within The distributing the top horizontal bymeans of threaded in bosses l3 formed in head portion 4. Pla

the confines of inner wall 6. chamber 1 is partially closed I I, whichis supported to and directly above edges of the walls 5 and 6 bolts l6,fixedly mounted the bowl shaped burner te I l is provided with a roundcentrally disposed aperture or opening M which coincides in size andregisters with the opening l8, and the outer edge of the plate iscorrugated or otherwise shape d to correspond to the connular inner andouter openings or ports 8 and 9 defined by and the bottom face the topedges of the walls 5 and 6 of the plate II are adapted to supportannular flames when gas is supplied to the burner. The outer peripheraledge of the plate II extends beyond or overhangs the wall 5 and port 9,and thus serves as a guard to prevent food and other flame openings.

Likewise drippings from clogging the the inner periphery of plate H isslightly beveled as at l2, so that this beveled portion will slightlyoverhang the inner face of wall 6.

in the air opening or passage l9, and, supported from plate II by meansof arms flow of air to the gas ports prevents a too free or flameopenings.

An annular baflle A baffle member (3 located preferably plate I5,positioned within the top of distributing chamber 1, slightly below thetop edges of wall s 5 and 6, is adjustably supported on the bolts l6previously referred to.

The inner peripheral seats snugly against 6, and preferably formspassage of gas betw edge of annular plate l5 the outer face of innerwall a tight seal against the een the inner wall and the plate, and theouter edge of plate I5 is spaced from the inner face the annularvertically In order to counteract flowing stream of ga portion of theopening or passage of outerwall 5 to provide disposed gas passage I6.the tendency of the swiftly s to be discharged past that IS" adjacentthe mixing tube, I have found it desirable to increase the width of thepassage at this point as tirely unobstructed,

as distinguished from the Venturi type generally employed. Theelimination of the venturi is made possible by the use of the plate l5,and

full flow or unchecked ture being delivered the latter also permits of ahead of combustible mixto the burner head in close proximity to ports 8and 9, which of course is most desirable.

customarily used can burner can readily b A tube of much larger sizethan thus be employed and the e turned to a very low simmering positionwithout danger of back firing as the flame is sufficien lar passage [6.

The action of the gas mixture from tube l6 and thence out passage 9, tosupport a ring tly removed from the annuburner is as follows: The Ipasses through annular through annular port like outer flame. A portionof the gas will fiow inwardly over the top of plate IE to and throughthe inner annular port 8 to support a second and smaller inner annularflame, the secondary air for which is drawn through opening l0.

The baflle plate l5 will be adjusted to its proper height by themanufacturer, but if required further adjustment can be made by theuser, nuts 20, 20' being provided for this purpose. Top plate I I canalso be readily raised and lowered by screwing up or unscrewing a nutl8. A split Washer I9 is preferably interposed between the plate II andthe nut 20 so that adjustment of the top plate can be made withoutinterfering with the fixed adjustment of the baffle plate.

Having thus described my invention:

1. A gas burner comprising a bowl shaped body having an open top, anouter wall and a substantially cylindrical inner wall axially alignedwith and spaced from said outer wall to provide a substantially ringshaped mixing chamber, an axially perforated plate adjustably mountedslightly above said open top providing substantially concentric innerand outer circumferential outlet passages from said chamber to the openatmosphere, means for mounting said plate, and a ring shaped, solid,horizontally arranged baflle member within said mixing chamber forsubdividing same and connecting the subdivisions of said chamber by anarrow substantially ring shaped passage adjacent to the outer Wall ofsaid chamber for directing the gas toward said outer outlet passage,said means for supporting said plate also supporting said baffle memberin slightly spaced relation from the open top of said mixing chamber.

2. A gas burner comprising a body including a burner manifold andprovided with an open top and a substantially ring shaped mixingchamber, a plate fitting the open top of said chamber mounted slightlyabove said open top for providing substantially concentric outletpassages from said chamber to the open atmosphere, and a ring shapedbaifie member within said mixing chamber shaped to restrict the passagethrough said chamber to a narrow substantially ring shaped passageadjacent to the outer wall of said chamber, said passage being ofgreater width at the burner portion adjacent said manifold to insureuniform supply of gas to the concentric passages throughout their entirecircumferential area.

3. A gas burner comprising a body having an open top and a substantiallyring shaped mixing chamber, the inner cylindrical wall of which forms anopen ended passage and the outer wall of which is fluted to provide anoutlet opening of varying area at the top of said chamber, a flat,centrally perforated plate shaped to fit the open top of said chambermounted slightly above the open top of said body to providesubstantially concentric outlet passages from said chamber to the openatmosphere, means within said open ended passage to partly obstruct afiow of air through said open ended passage, and a ring shaped bafliemember within said chamber shaped to subdivide said chamber into upperand lower compartments communicating with each other through arestricted narrow ring shaped opening adjacent to the outer wall of saidchamber.

4. A gas burner comprising a bowl shaped body having an open top, afluted outer wall and a cylindrical inner wall axially aligned with andspaced from said outer wall to provide a substantially ring-shapedmixing chamber enclosing an axial passage through said body, a flat,axially perforated plate having the irregular configuration of saidchamber mounted slightly above the open top thereof in alignment withthe inner and outer walls to provide two substantially concentric narrowoutlet passages adjacent to the inner and outer walls of said chamber,and a ring shaped bafile member within said chamber shaped to form arestricted narrow ring shaped passage adjacent to the outer wall of saidcham her.

5. A gas burner comprising a manifold of unrestricted cross section, abowl shaped body at one end of said manifold having an open top and asubstantially ring shaped mixing chamber, a flat, axially perforatedplate having approximately the configuration of said mixing chambermounted slightly above the open top of said body to providesubstantiallyconcentric narrow inner and outer outlet passages for thegas and air mixture discharged from said mixing chamber, and a ringshaped plate within said chamber and. contacting with the inner Wallthereof and slightly spaced from the outer wall of said chamber andadapted to subdivide said chamber into upper and lower compartmentscommunicating with each other through a restricted ring shaped openmg.

6. A gas burner comprising a body having an open top and a substantiallyring shaped distributing chamber the inner wall of which forms an openended passage, a plate fitting the open top of said chamber mountedslightly above said open top to provide an outlet passage from saidchamber to the open atmosphere, a plurality of supporting posts for saidplate extended through said chamber and a baiile plate within saidchamber adjustably mounted upon said posts and slightly spaced from theopen top of said chamber, and a baflle member adjustably mounted in saidpassage.

HERBERT R. PALMER.

